28-09-2023, 09:38 AM
From my recent purchase of Microbee material there was a document titled Engineering Bulletin 8704 Running Old Basic Programs. A4 in size and 3 pages long. Scanned at 600dpi and converted to a searchable PDF as usual.
This Engineering Bulletin was written by Max Maughan, from Microbee Systems, and is dated 2nd September 1987. BASIC programs that look at a byte with PEEK(258) for a keyboard input will not work on the Microbee 256TC. The reason is that PEEK (258) looks directly at the 6545 for keyboard information. The 6545 in the 256TC has nothing to do with the keyboard.
To overcome this a small machine code routine plus USR calls needs to be added to the BASIC program, which this bulletin provides. A test program is also listed.
We already have this document in the repository but this version updates it as it has an extra page.
So in the MbeeTech Repository in the Microbee/Documentation/Manuals/Technical folder we replaced
engineering_bulletin_8704_running_old_programs_on_256tc.pdf
This Engineering Bulletin was written by Max Maughan, from Microbee Systems, and is dated 2nd September 1987. BASIC programs that look at a byte with PEEK(258) for a keyboard input will not work on the Microbee 256TC. The reason is that PEEK (258) looks directly at the 6545 for keyboard information. The 6545 in the 256TC has nothing to do with the keyboard.
To overcome this a small machine code routine plus USR calls needs to be added to the BASIC program, which this bulletin provides. A test program is also listed.
We already have this document in the repository but this version updates it as it has an extra page.
So in the MbeeTech Repository in the Microbee/Documentation/Manuals/Technical folder we replaced
engineering_bulletin_8704_running_old_programs_on_256tc.pdf
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ChickenMan
ChickenMan